/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.sqoop.utils;

/**
 * Convenience String methods.
 *
 * We might consider replacing this with commons-lang library at some point.
 */
public final class StringUtils {

  public static String join(String []array, String separator) {
    if(array == null) {
      return null;
    }

    StringBuilder sb = new StringBuilder();
    boolean first = true;

    for(String item : array) {
      if(first) {
        first = false;
      } else {
        sb.append(separator);
      }

      sb.append(item);
    }

    return sb.toString();
  }

  private StringUtils() {
    // Instantiation is prohibited
  }
}
